Messier 101 - The Pinwheel Galaxy (Rui Horta Lourenço)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: HD122865 · M 101 · NGC 5447 · NGC 5449 · NGC 5450 · NGC 5451 · NGC 5453 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5462 · NGC 5471 · NGC 5477 · Pinwheel galaxy

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Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

Powered byPixInsight

Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy 21 million light-years (6.4 megaparsecs) away from Earth in the constellation Ursa Major. It was discovered by Pierre Méchain in 1781=10.5px and was communicated that year to Charles Messier, who verified its position for inclusion in the Messier Catalogue as one of its final entries.

The difference between this image and the previous one already published is only the processing software. I used Pixinsight now instead of Astro Pixel Processor.

Original
B
Final
C

B

Title: Messier 51 / NGC 5194 -- Whirlpool Galaxy (revision 1)

Description: Unsaturated background with pixinsight luminance mask and curves function

Uploaded: ...

C

Title: Messier 101 (high saturation)

Description: High saturation with curves in PixInsight

Uploaded: ...

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	7432700
PixInsight job	015HTZFRI9R8QRTHZA5YX0TSHV6P815V
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	14h03m13s.733
RA (top/left)	14h07m01s.361
RA (top/right)	13h59m56s.614
RA (bottom/right)	13h59m29s.423
RA (bottom/left)	14h06m27s.427

Dec (center)	+54°22′06″.64
Dec (top/left)	+54°39′03″.85
Dec (top/right)	+54°45′49″.43
Dec (bottom/right)	+54°04′43″.97
Dec (bottom/left)	+53°58′06″.47

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Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

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Image Index:

Contribution Index (beta):

Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

Messier 101 - The Pinwheel Galaxy

Revision title: Messier 101 (high saturation)

Equipment

Acquisition details

Description

Comments

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C

Sky plot

Histogram

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